CN105092365A - Concrete component tensioned loading frame - Google Patents
Concrete component tensioned loading frame Download PDFInfo
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- CN105092365A CN105092365A CN201510521901.XA CN201510521901A CN105092365A CN 105092365 A CN105092365 A CN 105092365A CN 201510521901 A CN201510521901 A CN 201510521901A CN 105092365 A CN105092365 A CN 105092365A
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- threaded rod
- loading frame
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Abstract
A concrete component tensioned loading frame comprises a baseplate. Four threaded screws are uniformly distributed at the edge of the baseplate, a supporting plate is horizontally fixed on each threaded rod at a same height, one end of each compression spring is connected with the corresponding supporting plate and penetrates the corresponding threaded rod while the other end of the same is connected with a load bearing device, the load bearing device is locked in the threaded rods through nuts, a test piece with an embedded member is arranged on the baseplate, axis of the upper end of the test piece is connected with one end of a tension sensor, and the other end of the tension sensor is connected with the load bearing device. The jack compression springs are used directly during loading, and tension is applied to concrete according to elasticity of the springs, so that the loading process is simple and easy in operation; applied force is controlled through a pressure sensor, and monitoring of stress is realized according to the tension sensor, so that timely load supplementing can be realized, and accuracy of carried load is guaranteed.
Description
Technical field
The present invention relates to a kind of concrete durability experiment charger, particularly a kind of concrete component is pulled and supported lotus loading frame.
Background technology
Concrete is being carried out in the process of endurancing, need to accomplish to hold lotus for a long time to concrete, and be placed in corresponding environmental cabinet, test under difficult environmental conditions load on the impact of concrete durability, this just needs to hold lotus can accomplish long-term lasting and accurately to concrete, consider concrete characteristic, easily creep, carry so also need regularly to carry out benefit to concrete.
The concrete of current employing is held lotus charger and is roughly divided into three kinds, the charger that lever loading device, spring charging device, moment of torsion control, wherein lever loading device can ensure to hold lotus precision, but be mainly used in or four-point bending load at 3, and loading frame is general comparatively large, is difficult to insert in environmental cabinet; Spring charging device can reduce stress relaxation to a certain extent by spring, but it is the same with moment of torsion controlled loading device at present, all the control of the size by torque spanner test force, when holding lotus needed for component and being larger, become very difficult by the load mode of torque spanner fastening bolt, and also convenient not by the convert method of axial force of the reading of torque spanner, and be affected many factors, also not accurate enough, torsion controlled loading mode is used for greatly concrete compression and holds lotus simultaneously.Bring to the precision of test to affect largely.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of concrete component and is pulled and supported lotus loading frame, can overcome the defect of loading procedure difficulty, reduces the impacts such as the stress relaxation brought of concrete creep, thus improve test hold lotus precision.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of concrete component is pulled and supported lotus loading frame, comprise base plate, bottom edge is evenly equipped with four threaded rods, sustained height on every root threaded rod, level are fixed with support plate, Compress Spring one end is connected with support plate and passes threaded rod, the Compress Spring other end is connected with bogey, bogey by nut lock on threaded rod; Described base plate is provided with the test specimen of band built-in fitting, and axle center place, test specimen upper end is connected with pulling force sensor one end, and the pulling force sensor other end is connected with bogey.
Described bogey comprises the intermediate plate that edge passes threaded rod, is connected with Compress Spring, intermediate plate is provided with inner support, inner support is shelved pressure transducer and lifting jack.
Described intermediate plate center has through hole, and the coupling bolt on pulling force sensor through through hole, and uses nut lock.
Bottom described base plate, multiple universal wheel is installed.
The present invention is a kind of, has following technique effect:
1), by lifting jack load and achieve load mode simplification, and lifting jack directly can unload, and holds lotus by spring, can not take experimental facilities, improves volume test efficiency.
2) mode of, holding lotus by spring reduces the impacts such as the stress relaxation that concrete creep brings.
3), in loading procedure the size of loading force is strictly controlled by pull pressure sensor, achieves and holds lotus precision, and can hold the size of the suffered pulling force of tight monitoring in lotus process for a long time at concrete, can accomplish to mend in time to carry.
4), experiment frame specification is less, coordinates spring to hold the structure of lotus, can carry out organizing experiment in environmental cabinet more simultaneously, be convenient to real time contrast.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is one-piece construction schematic diagram of the present invention.
The structural representation of Fig. 2 intermediate plate of the present invention.
In figure: base plate 1, threaded rod 2, support plate 3, Compress Spring 4, bogey 5, test specimen 6, pulling force sensor 7, connecting screw rod 8, inner support 9, pressure transducer 10, lifting jack 11, universal wheel 12, top board 13, intermediate plate 14, through hole 15.
Embodiment
As shown in Figure 1, a kind of concrete component is pulled and supported lotus loading frame, comprise base plate 1, base plate 1 edge is evenly equipped with four threaded rods 2, sustained height on every root threaded rod 2, level are fixed with support plate 3, and Compress Spring 4 one end is connected with support plate 3 and passes threaded rod 2, and the support plate 3 of installation ensure that spring ratio of height to diameter can not be excessive and unstability occurs, Compress Spring 4 other end is connected with bogey 5, bogey 5 by nut lock on threaded rod 2; Described base plate 1 is provided with the test specimen 6 of band built-in fitting, and axle center place, test specimen 6 upper end is connected with pulling force sensor 7 one end, and pulling force sensor 7 other end is connected with bogey 5.
As shown in Figure 1, described bogey 5 comprises the intermediate plate 14 that edge passes threaded rod 2, is connected with Compress Spring 4, and the central authorities on intermediate plate 14 are provided with inner support 9, inner support 9 are shelved pressure transducer 10 and lifting jack 11, then load onto top board 13, and fix by respective nut screw-threaded coupling.Pulling force sensor 7, pressure transducer 10 are all connected Acquisition Instrument, and use computer monitoring.
As shown in Figure 1 and 2, described intermediate plate 14 center has through hole 15, and the connecting screw rod 8 on pulling force sensor 7 through through hole 15, and uses nut lock.
As shown in Figure 1, bottom described base plate 1, multiple universal wheel 12 is installed, structure thus, convenient mobile.
For C30 concrete, during loading, pressurize to lifting jack 11, upper plate 13 keeps motionless.Intermediate plate 14 moves down, and Compress Spring 4 is compressed.By pressure transducer 10 reading, when reaching required load, tighten the nut on the intermediate plate 14 that is threaded with connecting screw rod 8.Then unclamp lifting jack 11, by the elastic force top intermediate plate 14 upwards of Compress Spring 4, thus realize the loading of axial tension, detected the size of pulling force simultaneously by pulling force sensor 7, if there is stress loss, above-mentioned step can be repeated and play, thus realize benefit year, to ensure to hold the accurate of lotus size.
Claims (4)
1. a concrete component is pulled and supported lotus loading frame, it is characterized in that: comprise base plate (1), base plate (1) edge is evenly equipped with four threaded rods (2), sustained height on every root threaded rod (2), level are fixed with support plate (3), Compress Spring (4) one end is connected with support plate (3) and passes threaded rod (2), Compress Spring (4) other end is connected with bogey (5), bogey (5) by nut lock on threaded rod (2); Described base plate (1) is provided with the test specimen (6) of band built-in fitting, and test specimen (6) axle center, upper end place is connected with pulling force sensor (7) one end, and pulling force sensor (7) other end is connected with bogey (5).
2. a kind of concrete component according to claim 1 is pulled and supported lotus loading frame, it is characterized in that: described bogey (5) comprises the intermediate plate (14) that edge passes threaded rod (2), is connected with Compress Spring (4), intermediate plate (14) is provided with inner support (9), inner support (9) is shelved pressure transducer (10) and lifting jack (11).
3. a kind of concrete component according to claim 1 is pulled and supported lotus loading frame, it is characterized in that: described intermediate plate (14) center has through hole (15), connecting screw rod (8) on pulling force sensor (7) through through hole (15), and uses nut lock.
4. a kind of concrete component according to claim 1 is pulled and supported lotus loading frame, it is characterized in that: described base plate (1) bottom is provided with multiple universal wheel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521901.XA CN105092365B (en) | 2015-08-24 | 2015-08-24 | A kind of concrete component is pulled and supported lotus loading frame |
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| CN201510521901.XA CN105092365B (en) | 2015-08-24 | 2015-08-24 | A kind of concrete component is pulled and supported lotus loading frame |
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| CN105092365A true CN105092365A (en) | 2015-11-25 |
| CN105092365B CN105092365B (en) | 2018-03-02 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738206A (en) * | 2016-03-29 | 2016-07-06 | 北京工业大学 | Mini-type bidirectional stress loading device |
| CN106198242A (en) * | 2016-08-31 | 2016-12-07 | 福建浔兴拉链科技股份有限公司 | Tension measurement instrument |
| CN108279166A (en) * | 2018-04-19 | 2018-07-13 | 南京理工大学 | A kind of compressed spring loading device and its test method for material aging experiment |
| CN108896422A (en) * | 2018-09-13 | 2018-11-27 | 郑州大学 | Muscle material and Bond Performance Between Concrete experimental rig and method under a kind of cyclic reverse loading |
| CN109406293A (en) * | 2018-12-10 | 2019-03-01 | 镇江市高等专科学校 | A kind of observable type concrete test device |
| CN110702509A (en) * | 2019-09-23 | 2020-01-17 | 重庆大学 | Cement-based material continuous loading device for durability test |
| CN111272537A (en) * | 2020-03-09 | 2020-06-12 | 广东工业大学 | Load holding device for concrete corrosion test in acid environment |
| CN113155631A (en) * | 2021-03-02 | 2021-07-23 | 浙江工业大学 | Simple device and method for providing concrete carrying |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105738206A (en) * | 2016-03-29 | 2016-07-06 | 北京工业大学 | Mini-type bidirectional stress loading device |
| CN106198242A (en) * | 2016-08-31 | 2016-12-07 | 福建浔兴拉链科技股份有限公司 | Tension measurement instrument |
| CN108279166A (en) * | 2018-04-19 | 2018-07-13 | 南京理工大学 | A kind of compressed spring loading device and its test method for material aging experiment |
| CN108896422A (en) * | 2018-09-13 | 2018-11-27 | 郑州大学 | Muscle material and Bond Performance Between Concrete experimental rig and method under a kind of cyclic reverse loading |
| CN108896422B (en) * | 2018-09-13 | 2024-03-19 | 郑州大学 | Device and method for testing bonding performance of reinforcement and concrete under repeated load |
| CN109406293A (en) * | 2018-12-10 | 2019-03-01 | 镇江市高等专科学校 | A kind of observable type concrete test device |
| CN110702509A (en) * | 2019-09-23 | 2020-01-17 | 重庆大学 | Cement-based material continuous loading device for durability test |
| CN110702509B (en) * | 2019-09-23 | 2024-03-12 | 重庆大学 | Cement-based material continuous loading device for durability test |
| CN111272537A (en) * | 2020-03-09 | 2020-06-12 | 广东工业大学 | Load holding device for concrete corrosion test in acid environment |
| CN113155631A (en) * | 2021-03-02 | 2021-07-23 | 浙江工业大学 | Simple device and method for providing concrete carrying |
| CN113155631B (en) * | 2021-03-02 | 2024-03-22 | 浙江工业大学 | Simple device and method for providing concrete carrying |
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